i wont be coming today sorry

•March 9, 2011 • Leave a Comment

Raster – The other GIS data question

•March 8, 2011 • Leave a Comment

1.Azimuth  is everythings distance is right from the center

2.Euclid was a Greek mathematician, he was know as the father of Geometry

a)Euclid distances is the  distance between two points that one would measure with a ruler, and is given by the Pythagorean formula

3.a2+b2=c2 on a right triangle with a triangle of each side ,both small sides would equal the bigger side when mix together

4.allows two raster layers and makes a new one using algebra math

5. Distance Analysis

Density Analysis

Solar Analysis

Hydrologic Analysis

Statistical Analysis

Map Algebra

Scripting and Customization

Graphic Modeling



•March 3, 2011 • Leave a Comment

Put a buffer a house- for how many parks there are in the area

Buffer apart of land were your artillery will hit

Area around a smokestack for air pollution

School zone

Military camps in a country

New York Parks

•March 1, 2011 • 3 Comments

New York Parks

•February 23, 2011 • Leave a Comment

10. Grid- are small squares holding different data

11. Resolution-  Resolution quantifies how close lines can be to each other and still be visibly resolved, Wikipedia

12. Discrete data- Data that can only take certain values, the number of students in a class (you can’t have half a student) from Mathisfun
13. – process of determining the location of a point by measuring angles to it from known points at either end of a fixed baseline, rather than measuring distances to the point directly, Wikipedia

14. Break lines-  Break a line into two
15. Z-values-
16. Nodes- point along a standing wave where the wave has minimal amplitude
17. Slope- a line that describes its steepness, incline, or grade, wikipedia
18. Aspect- horizontal direction to which a mountain slope faces, wikipedia
19. Elevation- height of a point on a hill, mountian
20. Tessellated Space- no gaps or overlayers ,wikipedia

•February 21, 2011 • Leave a Comment

.dwg – drawing file used by autodesk

.dxf – drawing exchange format by autoCAD

.dwf – Design web format by auto desk

.dgn – DGN (Design) is the name used for CAD file formats supported by Bentley Systems’ MicroStation and Intergraph’s Interactive Graphics Design System (IGDS) CAD programs

.csv – Comma-separated values, stores  tabular data

.txt –  text file , stores any texts like word or notepad

.xml – Extensible Markup Language , used for web

.gml – Geography Markup Language (GML) is the XML grammar defined by the Open Geospatial Consortium (OGC) to express geographical features

.kml – Keyhole Markup Language (KML) is an XML schema for expressing geographic annotation and visualization within Internet-based

.kmz – is used for .kml and is compassed into zip files, they contain one .kml file in them

hockey puck on the moon

•February 21, 2011 • Leave a Comment


Dylan’s mapping sample

•February 16, 2011 • Leave a Comment

Map data

Summary review questions

•February 16, 2011 • Leave a Comment

1. Generalization is necessary because it simplifies maps and makes maps easier to study

2. In map scale generalization has been in some way to some extent, been generalized to match the criteria of display

3.When scale decreases the points, line, and area features decreases in detail

4.Selection is merging data togather the farther u go out Simplification is making all data simple

5.nominal -name


interval- size

Gis program

•February 15, 2011 • Leave a Comment

Free GIS program

GMT is an open source collection of ~60 tools for manipulating geographic and Cartesian data sets